Split air filter

Abstract

The invention discloses a split air filter. The split air filter comprises a base, wherein a cavity which is formed by an upper housing and a lower housing and can accommodate a filter core is formedin the base; an air inlet is formed in the upper housing; an ash discharging opening is formed in the lower housing; a spiral protrusion A and a spiral protrusion B which mutually cooperate and have the same spiral direction are arranged on the outer wall of the upper housing and the outer wall of the lower housing correspondingly; the spiral protrusion A extends along the upper part of the upperhousing to the lower part of the upper housing; the spiral protrusion B extends along the upper part of the lower housing to the lower part of the lower housing; and a spiral air channel which communicates with the air inlet with the ash discharging opening is formed in the inner wall of the upper housing and the inner wall of the lower housing by the spiral protrusion A and the spiral protrusionB. The split air filter disclosed by the invention has the advantages of being ingenious in structural design, stable and reliable in usage, rapid in reaction and low in cost; when the split air filter is adopted, impurities in the air can be effectively separated, the filtering effect is improved, the service life and the maintaining time of the filter core are prolonged, air entering an engine is cleaner, and the service life of the complete machine is prolonged.

Description

technical field [0001] The invention relates to an air filter device, in particular to a split air filter. Background technique [0002] At present, for small engines, the application scenarios and terminals are becoming more and more extensive, such as road cutters, tillers, etc., and the environment during use is getting worse and worse; due to the presence of many impurities in the air, when the engine is working, the piston will The downward movement creates a negative pressure in the cylinder and sucks the outside air through the intake port. With the passage of time, filter filter alone can easily lead to fatal problems such as filter clogging and cylinder pulling. At the same time, the replacement cycle of the filter element is short and the cost is high. . [0003] In order to filter the impurities in the air and prolong the replacement cycle of the filter element and the service life of the whole machine, some engines use cyclone centrifugal force and the filter el...

AI Technical Summary

Problems solved by technology

[0002] At present, for small engines, the application scenarios and terminals are becoming more and more extensive, such as road cutters, tillers, etc., and the environment during use is getting worse and worse; due to the presence of many impurities in the air, when the engine is working, the piston will The downward movement creates a negative pressure in the cylinder and sucks the outside air through the intake port. With the passage of time, filter filter alone can easily lead to fatal problems such as filter clogging and cylinder pulling. At the same time, the replacement cycle of the filter element is short and the cost is high.

[0003] In order to filter the impurities in the air and prolong the replacement cycle of the filter element and the service life of the whole machine, some engines use cyclone centrifugal force and the filter element to filter, but due to the structural factors of the air filter, the inlet of the filter is only about 90° The stroke has a spiral guiding effect, and the inhaled air is relatively scattered, which does not effectively form a fast-flowing cyclone airflow, and cannot effectively separate heavier impurities from the air

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